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MSABI Clay Bit

What is it?

MSABI Clay Bit

The clay bit used by MSABI consists of welding a triangle of spring steel to the top of a pipe socket (connector), then welding four additional teeth to the outside of the socket as shown in the pictures. The teeth are then ground using an angle grinder and additional pieces of 8mm bar inserted to increase the strength of the fixing of the central tooth, see diagram.

Good Things

Cuts up the clay to small pieces (around the size of the end of a finger) which are easily carried to the surface

The clay is cut up and does not clog the pipe

Things

The design is weak and the teeth often break off, which can stop the drill bit from passing any deeper

At that time we were grinding at out side of the teeth, but we find that
is easier to get stuck., but now what we are doing is to sharpen inside
the teeth so that is easier to cut the clay and can not get stuck